Search found 432 matches

by brightcaster
Mon Jul 19, 2021 8:40 am
Forum: Dumping
Topic: Can someone help me with 5.25" floppies?
Replies: 2
Views: 66

Re: Can someone help me with 5.25" floppies?

The best test floppies you can get are those from original games with a sealed write notch! They are written with the best regularly serviced professional equipment.

I guess you already have plenty of them in your boxes....

David
by brightcaster
Mon Jul 19, 2021 8:33 am
Forum: Support
Topic: help writing bootable Osborne disks from stream files
Replies: 27
Views: 510

Re: help writing bootable Osborne disks from stream files

Some LED lamps still do flicker. I tested it on my vinyl player. The rule is: the cheaper the better ;-)

David
by brightcaster
Sun Jul 18, 2021 3:36 pm
Forum: Support
Topic: help writing bootable Osborne disks from stream files
Replies: 27
Views: 510

Re: help writing bootable Osborne disks from stream files

The procedure is described in the manual at page 217 (8.3.2) and the "Osborne Disk Exerciser Programm" should be on one of the system disks. But you need a special alignment floppy! http://www.bitsavers.org/pdf/osborne/2F00040-00_Service2ndEdition_1983.pdf On the other hand there is a stro...
by brightcaster
Sat Jul 17, 2021 7:39 pm
Forum: Dumping
Topic: Why my 360K disks dumps are in 720K files
Replies: 2
Views: 66

Re: Why my 360K disks dumps are in 720K files

In the GUI you have to set track distance to 40 track. On the command line you have to set double stepping with"-k2" (supposed you are using a 80track drive).

If you are using a 40track drive you have to add -oe39 to limit the output.

David
by brightcaster
Sat Jul 17, 2021 4:18 pm
Forum: Support
Topic: help writing bootable Osborne disks from stream files
Replies: 27
Views: 510

Re: help writing bootable Osborne disks from stream files

This is a track written by the TEAC, where the bands are quite flat with proper timing.
Photo3.jpg
And this is what drive A does when writing the sectors (the gaps are still written by the TEAC with proper timing)
Photo4.jpg
David
by brightcaster
Sat Jul 17, 2021 4:15 pm
Forum: Support
Topic: help writing bootable Osborne disks from stream files
Replies: 27
Views: 510

Re: help writing bootable Osborne disks from stream files

The tracks written by your A drive are the ones marked with the yellow H (modified). If you will look at them yourself you can move the cursor on a block and see the results in the scatter view. (compare yellow vs green to see the difference). Photo1.jpg Next is the analyzer view of the HxC tool whi...
by brightcaster
Sat Jul 17, 2021 3:48 pm
Forum: Support
Topic: help writing bootable Osborne disks from stream files
Replies: 27
Views: 510

Re: help writing bootable Osborne disks from stream files

Okay it's not a problem of tracking but a matter of bitcell lenght! First you have to know that the COPYSYS command does not format the whole floppy but only writes some system files to it. So some parts are written by drive A and other parts are written by your TEAC drive. If we look to sectors wri...
by brightcaster
Sat Jul 17, 2021 9:28 am
Forum: Support
Topic: TEAC FD-55BR doing weird noise when calibrating with Kryoflux
Replies: 8
Views: 113

Re: TEAC FD-55BR doing weird noise when calibrating with Kryoflux

If you are using the GUI you can set it in the menu at "file/settings/advanced/calibration override".

David
by brightcaster
Fri Jul 16, 2021 9:05 pm
Forum: Support
Topic: help writing bootable Osborne disks from stream files
Replies: 27
Views: 510

Re: help writing bootable Osborne disks from stream files

Please boot from drive B and use the COPYSYS command to write a copy of the boot floppy on drive A. Does the floppy written on A this way look the same on the odd tracks?

David
by brightcaster
Fri Jul 16, 2021 6:31 pm
Forum: Support
Topic: help writing bootable Osborne disks from stream files
Replies: 27
Views: 510

Re: help writing bootable Osborne disks from stream files

Also, I doubt all sectors would show "green" when dumping a known-good disk if the TEAC were misaligned, right? Does that rule out an alignment problem in my TEAC, or is there some other test I should do? [/quote] Yes, if all tracks show "green" you got a perfect dump! In my opi...